Cut-off mechanism for paper-tube machines.



PATENTED AUG. 13, 1907.

I. G. OSBORN. OUT-OFF MECHANISM FOR PAPER TUBE MACHINES.

APPLICATION IILBD JULY 31, 1905.

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I. G. OSBORN.

GUT-OPP MECHANISM FOR PAPER TUBE MACHINES. APPLICATION FILED JULY 31,1905.

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No. 863,208. PATENTBD AUG. 13, 1907. F. G. OSBORN.

GUT-OFF MECHANISM FOR PAPER TUBE MACHINES.

APPLICATION TILED JULY31.1905.

4 SHEETS-SHEET 3.

No. 863,208. PATENTED AUG. 13, 1907. P. G. OSBORN.

GUT-OFF MECHANISM FOR PAPER TUBE MACHINES. APPLICATION FILEDJULY31.1905.

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' FRANCIS O. OSBORN, OF DETROIT, MICHIGAN.

CUT-OFF MECHANISM FOR PAPER- TUBE MACHINES.

Specification of Letters Patent.

Patented Aug. 13, 1907.

Application filed July 31,1905. Serial No. 271,379.

To all whom it may concern:

Be it known that I, FRANCIS O. OSBORN, a citizen of the United States,residing at Detroit, in the county of Wayne and State of Michigan, haveinvented a new and useful Cut-Off Mechanism for Paper-Tube Machines, ofwhich the following is a specification.

My invention relates to that type of machines by which continuous stripsor bands of paper or other similar material are carried spirally arounda mandrel, cemented together, formed into continuous tubes, and finallycut off into predetermined lengths. The objects of my improvements aretoprovide a machine of this class that can be quickly and easily adjustedfor paper of varying widths and for tubes of different diameters; toprovide means whereby the tubes are made of two or more layers, theinner surface of the inner layer being evenly coated with paraffin andthe inner surface of the other layers being coated with glue or othercement; to provide means whereby the parafiin and glue will be evenlyspread on the strips of material; to provide guides for the paper thatare easily adjustable; 'to provide means to accurately and cleanly cutthe tube into lengths and to provide means to quickly dry the cement ofan auxiliary between the layers of the material. I attain these objectsby the construction illustrated in the accompanying drawings, in whichFigure l is a general plan of the machine. Fig. 2 is an elevation of thecut off mechanisin. Figs 3, 4 and 5 are details of the cut offmechanism, .Fig. 4 being a cross section on the line 44 of Fig. 2. Fig.6 is a plan of the cut off mechanism on a somewhat smaller scale. Figs.7, 8 and 16 are details of the belt carrying mechanism for winding thetubes. Figs. 9, 10 and 11 are details of paper guides. the paper coatingmechanism. Figs. 15 and 19 are views of guides for the paper strips thatare adapted to be secured on the forming mandrel. Fig. 17 is a viewbearing for the saw shaft. Fig. 18- is a cross section through thedriving pulley of the saw.

' Similar reference characters refer to like parts throughout theseveral views.

The base or bed A of the machine is similar to a lathe bed and issupported by legs as shown in Fig. 1. On this bed are pivoted theswinging bed pieces IE, and the swinging arm B. The pivots of the bedpieces B and arm B are in line with each other. To one end of each ofthe flat bed pieces is secured a slidable support F for the pulley P,the distance between this pulleyand the pulley P being varied by thescrew F. At the other end of the bed piece is the journal bracket .T ofthe shaft 0, which bracket is pivoted on the screw j. Outside of thebracket J isthe uprightbearing K of the stud shaft 70 of the pulley P.On the lower end of the shaft k is the gear L which meshes with thepinion N on the shaft 0. Inside of the bracket J is the bearing 0 of thepivoted to the bearing 0 Figs. 12, 13 and 14 are details of guidedbetween the pins in shaft It which shaft extends across and is splinedin a sleeve 1, carrying a pinion N which meshes with a second gear L ona second shaft is which carries the pulley I at its upper end. One ofthese bed pieces B is provided for each two thicknesses of material usedto make the tube.

At the head end of the base A is a small bracket a, to which is pivotedthe swinging arm B which'is in turn on the shaft C. This bearing is heldfrom longitudinal movement on the shaft by the collars c. A link 1) ispivoted to all the swinging bed pieces B by the pins 7', and as thedistance between the pins j is the same as that between the pins X ofthe swinging bed pieces, the several bed pieces will always remainparallel to each other. The angle between the bed pieces and the base isdctermined' by the graduated screw W supported by the bracket E securedto the base A, which screw engages in the nut U which is pivoted at oneend of the first bed piece B in line with the screws X and j, andequi-distant from X with j. As will be seen in Fig. 1, the screw W isgraduated so the angle between the bed pieces B and the mandrel canbeaccurately determined.

The machine is driven from an over-head countershaft of any desiredconstruction on which countershaft is secured a wide driving pulleywhich pulley is connected by means of a 'driving belt with the pulley p.The bolts 1) pass around the mandrel M as shown in Fig. 1 and should beabout as wide as the material wound. The hollow mandrel is securelyfixed in the head H of the machine. For the purpose of heating themandrel so that the paraffin will penetrate the material of the stripand flow into the joint between the spirals and also dry the cement, Iprovide a steam pipe;bent upon itself extending the length of themandrel and having ends m projecting from one end of the mandrel, whichpipe ends may be connected to any steam source.

The means for coating the paper strip with paraffin or glue isdesignated by G, and consists of the tank 70 supported on su'itablelegs,and having secured to it the arms 71 carrying the pin 72 upon which ismounted the roll of paper 73. J ournaled on the pin 74 is the roller 75which dips into the liquid paraffin or cement and carries it up againstthe lower face of the paper strip. This strip is the holes 76 in the arm77 pivoted to the sides of the arms 71. The guide roll 78 is supportedon the pin 80 secured in the frame 82 at the upper end of the rod 83. Onthe pin 81 are secured the collars 84 having fingers 85 which pressagainst the coated side of the paper strip. Usually the coating materialcollects on the outer edges of the strip but by means of the fingers 85it is spread evenly toward the center. It will be'noticed that by reasonof the roll 78 the coated'strip will pass to the tube making machinewith the coated side up, thus not only avoiding any I the strip is fedto the machine with the coated side down, but also permitting thecoating to level itself on end of the shaft 20.

the flat surface.

To the base are secured the paper guides as shown in Fig. 1, eachconsisting of the base 90 to which is secured the arm 91 carrying thefixed part 92 of the guide and the slidable part 93, secured to the part92by bolts.

An auxiliary guide for the paper strips is shown in Fig. 15 and consistsof the spirally arranged guide 95 secured to the mandrel M ag'ainstwhich the inner strip of paper 97 will run, and over this guide 95, toposition the strip 96, is secured an arm 98 which bears'the guide 99against which the outer strip 96 will run. With certain grades ofpaper,-the guide shown in Fig. 19 is found to be of great value. Insteadof the short piece 95 as in Fig. 15, the part 100 is madeto pass aroundthe mandrel. The paper is wound upon the spiralsheet of brass 101, whichextends until just before the place where the first belt I) embraces themandrel. The mandrel M being of less diameter at this point, the tubewill slip around it more easily. The arm 98 and guide 99 are usedasbefore. The part 101 serves a similar purpose to part 100 in that itacts as a shoulder to force the paper along the mandrel and acts on theinner strip after it has left the part 100 and after the outer strip hasbeen wound I upon it.

Secured to the end of the base is an arm h which carries the means forcutting the tube into predetermined lengths. The outer end of arm h isbroadened to form a plate S to which is adjustably secured the table T.The table is slidable on the plate and adjustable sidewise by the smallset screws t shown in Fig. 6. Attached to the table T are twd arms -1,between which is pivoted the frame 4). This frame is braced by the crosspieces 50 and the vertical piece 51. In the upper part of this frame isjournaled the arbor 10 for the saw 110 for cutting off the tubes. I Thisarbor is 'slidable longitudinally in its journals and the position ofthe saw while cutting is controlled by the following means.

The tube as it comes from the mandrel abuts against the plate 14 on theend of the slidable rod 13 as shown in the dotted lines in Fig. 4. Thisrod is supported by and is slidable in the upper end of the'arm 15 whichis I carried by the revoluble rod 35 and by the arm 8 car- '3 saw arboris driven by a belt from an over-head pulley sleeve 53 journaled in riedon the saw arbor. Adjustable collars 52 on the rod 13 position the plate14 with reference to the saw. The

to the flanged pulley 12 on the thebearing 54 of the frame 2. (Fig. 18).A feather 102 in the arbor key'seat forms the driving connection betweenthe arbor and the pulley. To the frame 2 are attached arms 4 and 5 whichengage cams 55 and 56 respectively on the shaft 20. (Fig. 3). Whentherefore the shaft 20 is revolved the frame with the saw will be swungtoward and away from the tube. In the outer ends of the arms 1 isjournaled the constantly running screw 3 which is intended to return thesaw 110 to its initial position, which screw is constantly driven bymeans of the pinion 36 which meshes with the gear 37 (Fig. 2) secured tothe pulley 57,loosely mounted on the This pulley is driven by a belt 58'on pulley 59 on the shaft C as shown in Fig. 1. The

2, secured to the shaft 35, which pro- 1 (Figs. 6 and l belt istightened by the pulley 60 on the arm 61, loosely mounted on the outerend of the shaft 20. Secured to the shaft 20 is a disk 38 and loose onthe outer end of the shaft is a second disk 39 having a pin 40 whichpasses through aslot near the end of the shaft. A screw 41 in the end ofthe shaft contacting with this pin regulates the pressure between thedisks and the pulley and the frictional stress on the shaft. Secured tothe shaft 20 are two collars 27 and 27, each having a'pin 62-62projecting therefrom, the pins being so positioned as to project fromopposite sides of theshaft so that the dogs 23 and 24 will alternatelystop the shaft 20 when the frame 2 and with it the saw 110 is in-thewithdrawn and in the operative positions respectively under the actionof the cams. I

The arm-8 is pivoted on the saw arbor and positioned by two smallcollars. To prevent it from revolving with the arbor it slides on a rod9 secured to the swinging frame 2. To this arm is attached a short bar29 (Fig. 2) having a finger 28, which, when the arbor and with it thearm 8 has reached its outward position contacts with the dog 24, movingit away from the pin 2 and releases the shaft 20, which in turningswings the frame and saw back from the tube by the action of the cams.The dogs 23 and 24 return to position under the influence of the springsshown in Fig. 2.

On the arm 8 is a slidable plate 30 having a tooth 34 that engages thethreads of the screw 3. This plate also has an upturned lug 33 and hasits end bent to form the hook 31. The plateis held in its upper andlower posi tions by the spring 64 acting on the lug 65. In the end ofthe arm 8 is a pin 26 that is spring pressed outward as the saw beginsto move with the tube.

The operation of the sawing mechanism is as follows her is free to slideunderthe pressure of the tube against the plate 14. The pin 26 in thearm 8 is to the left of the dog 23 (Fig 2) and the tooth 34 is free fromthe screw Upon the tube pressing against the plate 14, the rod 13, thesaw, the arbor and arm 8 are moved outward, the pin 26 moves dog 23 withit and pin 62 is released, permitting shaft 20 to turn part of arevolution which through the action of the cams on the arms 4 and 5swings the frame 2 and with it the arbor 'andsaw toward the tube,sufficient for the saw to cut through the walls of I the tube. In sodoing the hook 31 is brought in contact with the threads of the screw 3causing the plate 30 to be pulled out, the spring 64 acting on lug 65after passing the center to free the hook from the threads. The saw,arbor, arm 8, bar 29 and finger 28 move with the tube, cutting throughthe tube as it turns under the pull of the belts b, until the finger 28contacts with the dog 24, moving'it to the right, (Fig. 2) whichreleases the pin 62 and permits the shaft 20 to turn the remainder ofthe revolution or untilthe other pin 62 engages the dog 23. In this partof the revolution the cams swing the frame 3 2 back from thc tube,bringing the tooth 34 into engagement with the screw 3, thus causingthearrn 8, the arbor and the saw to be carried to the position shown inFig. 2. I When the pin 26 has passed the dog 23, which it can do owingto the beveled end, the pin 32 on the screw shaft .3 will contact withthe lug 33 and force the tooth 34 out of engagement with the screw. Thesaw will then rel main in its withdrawn position until sufficient lengthand is intended to engage the dog 23 and trip the same When the saw isin the position shown in Fig. 1, the ararbor for engaging said screw oftube is formed to agaih push the plate 14 and the rod 13 outward. Theamount of travel to the right and left is regulated by the position offinger 28 on the bar 29.

To prevent the tube being pulled back by the saw When the frame 2is'withdrawn, I secure the arm 16 to the rigid rod 19 carried -by thetable T. To this arm is secured the bar 17 with finger 18 which projectsagainst the tube and:prevents it moving to the left with the saw (Fig.4). To stiffen the saw arbor I secure a bar 66 to the arm 8 (Fig. 17 andprovide a bearing 67 This con- 'struction is omitted from the otherfigures as it is not absolutely necessary for ordinary tubes.

- Having now explained my improvements, what I claim as my invention-anddesire to secure by Letters Patent is,-

nally movable cutting tool carried by the swinging frame.

andmeans whereby the tube may move the cutting tool longitudinally.

In a tube making machine, the combination of lixed arms, a shaftl'evolubly mounted in said arms, an ecceir tric on said shaft, a screwrevolubly mounted in said arms, a swinging frame carried by said ar1ns,'said frame having means to engage the eccentric, a saw arbor journaledand slidable in said frame, and means carried by the arbor inintermittent engagement with the screw whereby said arbor may be movedlongitudinally in the frame when permitted by the eccentric.

4. In a tube making machine. the combination of fixed arms, a screwrevolubiy mounted in said arms. a swinging frame carried by said arms, asaw arbor join-naled and slidable insaid frame, and means carried by theto cause said arbor to be moved longitudinally in said frame.

5. In a tube machine, the combination of a rigid frame of the tubewhereby the tube may move the arbor in one direction, and an armconnected to the arbor having means -to engage the screw whereby thearbormay be moved in the opposite direction.

6. In a tube machine. the combination of a-rigid frame, a shaft havingintermittent motion journaled in'the frame, cams on said shaft, stopscarried by said shaft at an angle to each other, pivoted dogs carried bythe frame normally in the paths of the stops, a constantly running screwjourthe shaft. 7. In a tube machine, the combination of a fixed frame,said fixed frame. a-sbui'i having intermittent motion journaled in thefixed frame,

a fixed frame secured to the bed, a

shaft at an angle to each other, dogs pivoted to said-arms and normallyheld in the paths of the stops, a swinging frame pivoted between thearms, a slidable arbor journaied in said frame and movable in onedirection by the screw, and an arm slidable with said a'rbor for actingon 'the dogs alternately and so releasing the shaft so .it may revolvethe angular distance between the stops.

9. In a tube formingv machine, the combination of a rigid frame, africtionaily driven shaft journaled in said frame, cams on said shaft,stops on said shaft at an angle to each other, dogs pivoted to saidframe each normally in the path of a stop, a swinging frame having meansto engage the the swinging frame, an arm operate the dogs to releasethestops so the shaft may. turn through the angular distance to the nextstop, whereby the arbor carrying frame'wili be swung back and forth bythe cams, and a constantly driven screw for carried by the arbor tomoving the arbor in one direction when the frame has I journaled on saidarbor, means secured to one end of the arm to-contact with said screw,an adjustable rod carried by the other end of the arm, and a plate atone end of the adjustable rod in the path of the tube whereby the sawarbor: may be moved in one direction, said arbor being moved in theother direction by the screw.

12. In a tube machine, the combination of a fixed frame, a horizontalrod: secured in said frame, a swinging frame pivoted in said fixedframe, a cutting-off saw carried by the swinging frame, and from thetube, and means carried by the horizontal rod to prevent the cut offportion of the tube from moving back with the saw. i

.13. In a tube machine, tiie combination of a shaft," :1 disk secured tosaid shaft, :1 second disk loose on said shaft, a constantly runningpulley on said shaft between the disks whereby said shaft may beinicrmiilentiy driven, a gear secured to tho puiioy, :1. consiauiiyrunning screw driven by said gear, and a slidable saw arbor movable inone direction by said H1'i('\\.

- 14. In a cutting off maclilno, lilo combination of a bed,

means mounicd tiu'rcou lo support. i'hc article to be cut off, armssocurcd lo sold bod, a swinging frame connected tosaid arms. a saw arbormouuicd for longitudinal movement in said frame, means for moving thesaw arbor longitudinally in one direkeiioiu, and independent means forreturning the nrbor.

15. In a cuttin oil. machine, the combination of a fixed frame, a screwrevoiubiy mounted thereon, a swinging frame carried by the fixed frame,a cutting tool carried by the swinging frame, menus to engage the screwto move the tool in one direction, and independent means whereby thearticle to be cut ofi may move the tool in the opposite direction.

.iii. in a cutting off mechanism for chines, the combination of a frame,a saw arbor mounted therein, a saw on said arbor, and means for movingthe I saw to operative position,

longitudinally under the action of the tube, swinging lim saw back tonormal position and then moving the arbor longitudinally to the startingpoint.

in testimony whereof I have signed my name to this application in thepresence of two subscribing witnesses.

Gnu. WILSON.

earns, a slidable'arbor join-naled in means to move the saw to papertube mapermitting the arbor to slide

